.fensug {
    width: 100px;
    height: 100px;
    background: #0d2e49;
    /* 中间边框 */
    border-width: 2px;
    border-style: solid;
    /* 外圈 */
    margin: 0 auto;
    padding: 5px;
    -webkit-border-radius: 25em;
    -moz-border-radius: 25em;
    border-radius: 25em;
    overflow: hidden;
    position: relative;
    box-sizing: content-box;
}

.fensug .wavenum {
    width: 100px;
    height: 100px;
    overflow: hidden;
    -webkit-border-radius: 50%;
    border-radius: 50%;
    text-align: center;
    display: table-cell;
    vertical-align: middle;
    position: absolute;
    left: 5px;
    top: 5px;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.fensug .wavenum b {
    color: #fff;
    font-size: 16px;
    line-height: 16px;
    text-align: center;
    display: block;
    position: relative;
    z-index: 2;
}

.fensug .wavenum tt {
    color: #fff;
    font-size: 20px;
    text-align: center;
    display: block;
    position: relative;
    z-index: 2;
    font-weight: bold;
    width: 140px;
    border-top: 2px #fff solid;
    margin: 3px auto;
    line-height: 35px;
}

.waven {
    width: 100px;
    height: 100px;
    webkit-border-radius: 25em;
    -moz-border-radius: 25em;
    border-radius: 25em;
    background: #2d6795;
    /* 中心圈背景色 */
    overflow: hidden;
    position: relative
}

.wave {
    width: 408px;
    height: 0;
    position: absolute;
    left: 0px;
    bottom: 0;
    background-repeat: no-repeat;
    background-size: 10%;
    animation: move_wave 5s linear infinite;
    -webkit-animation: move_wave 5s linear infinite;
}

.wave1 {
    background: url(../assets/img/wave1.png);
}

.wave2 {
    background: url(../assets/img/wave2.png);
}

.wave3 {
    background: url(../assets/img/wave3.png);
}

.wave4 {
    background: url(../assets/img/wave4.png);
}

@-webkit-keyframes move_wave {
    0% {
        -webkit-transform: translateX(0)
    }

    50% {
        -webkit-transform: translateX(-25%)
    }

    100% {
        -webkit-transform: translateX(-50%)
    }
}

@keyframes move_wave {
    0% {
        transform: translateX(0)
    }

    50% {
        transform: translateX(-25%)
    }

    100% {
        transform: translateX(-50%)
    }
}